﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SendApplication.Helper;
using SendApplication.DataType;
using FirebirdSql.Data.FirebirdClient;
using System.IO;
using System.Net;
using System.Collections.Specialized;

namespace SendApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            
            while (true)
            {
                List<object> allQueue = Common.callProcedureQuery("TNH_GET_ALL_TRANSFERQUEUE", null, new DTTransferQueue());
                if (allQueue.Count > 0)
                {
                    for (int i = 0; i < allQueue.Count; i++)
                    {
                        TransferObj obj = (TransferObj)allQueue[i];
                        Console.WriteLine("Sending file " + obj.fileName + ".................................................");

                        NameValueCollection nvc = new NameValueCollection();
                        nvc.Add("filename", obj.fileName);
                        HttpUploadFile(SendApplication.Properties.Settings.Default.serverhost,
                             SendApplication.Properties.Settings.Default.path + obj.fileName, "upload", "multipart/form-data", nvc);


                        FbCommand cm = new FbCommand();
                        FbParameterCollection pc = cm.Parameters;
                        pc.Add("@FILENAME", FbDbType.Text).Value = obj.fileName;

                        Common.callProcedureQuery("TNH_UPDATE_TRANSFER", pc);

                        Console.WriteLine("Complete send file " + obj.fileName + "...................................................");
                    }

                }

                System.Threading.Thread.Sleep(5000);
            }
        }

        public static void HttpUploadFile(string url, string file, string paramName, string contentType, NameValueCollection nvc)
        {
            Console.WriteLine((string.Format("Uploading {0} to {1}", file, url)));
            string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
            byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");

            HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(url);
            wr.ContentType = "multipart/form-data; boundary=" + boundary;
            wr.Method = "POST";
            wr.KeepAlive = true;
            wr.Credentials = System.Net.CredentialCache.DefaultCredentials;

            Stream rs = wr.GetRequestStream();

            string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
            foreach (string key in nvc.Keys)
            {
                rs.Write(boundarybytes, 0, boundarybytes.Length);
                string formitem = string.Format(formdataTemplate, key, nvc[key]);
                byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem);
                rs.Write(formitembytes, 0, formitembytes.Length);
            }
            rs.Write(boundarybytes, 0, boundarybytes.Length);

            string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";
            string header = string.Format(headerTemplate, paramName, file, contentType);
            byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
            rs.Write(headerbytes, 0, headerbytes.Length);

            FileStream fileStream = new FileStream(file, FileMode.Open, FileAccess.Read);
            byte[] buffer = new byte[4096];
            int bytesRead = 0;
            while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
            {
                rs.Write(buffer, 0, bytesRead);
            }
            fileStream.Close();

            byte[] trailer = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
            rs.Write(trailer, 0, trailer.Length);
            rs.Close();

            WebResponse wresp = null;
            try
            {
                wresp = wr.GetResponse();
                Stream stream2 = wresp.GetResponseStream();
                StreamReader reader2 = new StreamReader(stream2);
                Console.WriteLine((string.Format("File uploaded, server response is: {0}", reader2.ReadToEnd())));
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message + "-" + ex.StackTrace);
                if (wresp != null)
                {
                    wresp.Close();
                    wresp = null;
                }
            }
            finally
            {
                wr = null;
            }
        }
    }
}
